ES2062976T3 - Dispositivo de telecomunicacion y circuitos usados en el mismo. - Google Patents
Dispositivo de telecomunicacion y circuitos usados en el mismo.Info
- Publication number
- ES2062976T3 ES2062976T3 ES87202393T ES87202393T ES2062976T3 ES 2062976 T3 ES2062976 T3 ES 2062976T3 ES 87202393 T ES87202393 T ES 87202393T ES 87202393 T ES87202393 T ES 87202393T ES 2062976 T3 ES2062976 T3 ES 2062976T3
- Authority
- ES
- Spain
- Prior art keywords
- transistor
- telecommunication device
- circuits used
- resistor
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6025—Substation equipment, e.g. for use by subscribers including speech amplifiers implemented as integrated speech networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Devices For Supply Of Signal Current (AREA)
- Burglar Alarm Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
SE PRESENTA UN DISPOSITIVO DE TELECOMUNICACION AL CUAL LA ENERGIA ELECTRICA SE SUMINISTRA DESDE UNA CENTRAL TELEFONICA POR MEDIO DE UNA LINEA (L1, L2). UN TRANSISTOR PNP UNA RESISTENCIA SENSIBLE A LA CORRIENTE (R) Y UN TRANSISTOR NPN, QUE CONSTITUYEN LA ETAPA DE SALIDA DE UN AMPLIFICADOR, SE CONECTA EN SERIE A LO LARGO DE LOS CONDUCTORES DE LINEA. LA CONEXION EN SERIE DE UN ALTAVOZ LS Y UN CONDENSADOR C7 SE CONECTA A TRAVES DEL TRANSISTOR T3. EL TRANSISTOR T2 Y LA RESISTENCIA R2 FORMAN SIMULTANEAMENTE PARTE DE UN CIRCUITO REGULADOR DE CORRIENTE CONTINUA Y DE UN CIRCUITO DE SINTESIS DE INPEDANCIA DE CORRIENTE ALTERNA QUE ES DE TAL MANERA QUE EL TRANSISTOR T3 Y EL ALTAVOZ L2 SE ALIMENTAN DE UNA FUENTE DE CORRIENTE CONTINUA.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2/61110A BE905921A (nl) | 1986-12-16 | 1986-12-16 | Telecommunicatie-inrichting en daarin gebruikte ketens. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2062976T3 true ES2062976T3 (es) | 1995-01-01 |
Family
ID=3865843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES87202393T Expired - Lifetime ES2062976T3 (es) | 1986-12-16 | 1987-12-02 | Dispositivo de telecomunicacion y circuitos usados en el mismo. |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0271946B1 (es) |
| AT (1) | ATE110512T1 (es) |
| AU (1) | AU605524B2 (es) |
| BE (1) | BE905921A (es) |
| DE (1) | DE3750425T2 (es) |
| DK (1) | DK656787A (es) |
| ES (1) | ES2062976T3 (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE905921A (nl) * | 1986-12-16 | 1987-06-16 | Bell Telephone Mfg | Telecommunicatie-inrichting en daarin gebruikte ketens. |
| EP0439641B1 (de) * | 1990-01-29 | 1994-03-23 | Siemens Aktiengesellschaft | Verfahren und Anordnung zur Bildung des Leitungsabschlusses einer Telefonleitung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1546046A (en) * | 1976-12-03 | 1979-05-16 | Cselt Centro Studi Lab Telecom | Transmitting and receiving circuit for subscriber telephone sets |
| NL8200666A (nl) * | 1982-02-19 | 1983-09-16 | Philips Nv | Transmissieschakeling voor een elektronisch telefoontoestel. |
| GB8317706D0 (en) * | 1983-06-29 | 1983-08-03 | Standard Telephones Cables Ltd | Telephone subsets |
| BE898049A (nl) * | 1983-10-21 | 1984-04-24 | Bell Telephone Mfg | Telecommunicatielijnketen en bijbehorende spanningsomzetter. |
| NL8400508A (nl) * | 1984-02-17 | 1985-09-16 | Philips Nv | Audiotransmissiecircuit met als lijnspanningsstabilisator uitgevoerde zendversterker. |
| BE905921A (nl) * | 1986-12-16 | 1987-06-16 | Bell Telephone Mfg | Telecommunicatie-inrichting en daarin gebruikte ketens. |
-
1986
- 1986-12-16 BE BE2/61110A patent/BE905921A/nl not_active IP Right Cessation
-
1987
- 1987-12-02 ES ES87202393T patent/ES2062976T3/es not_active Expired - Lifetime
- 1987-12-02 AT AT87202393T patent/ATE110512T1/de not_active IP Right Cessation
- 1987-12-02 EP EP87202393A patent/EP0271946B1/en not_active Expired - Lifetime
- 1987-12-02 DE DE3750425T patent/DE3750425T2/de not_active Expired - Fee Related
- 1987-12-07 AU AU82161/87A patent/AU605524B2/en not_active Ceased
- 1987-12-15 DK DK656787A patent/DK656787A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU605524B2 (en) | 1991-01-17 |
| EP0271946B1 (en) | 1994-08-24 |
| BE905921A (nl) | 1987-06-16 |
| EP0271946A3 (en) | 1990-04-04 |
| AU8216187A (en) | 1988-06-16 |
| DK656787A (da) | 1988-06-17 |
| DK656787D0 (da) | 1987-12-15 |
| DE3750425D1 (de) | 1994-09-29 |
| ATE110512T1 (de) | 1994-09-15 |
| EP0271946A2 (en) | 1988-06-22 |
| DE3750425T2 (de) | 1995-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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